Yucca Mountain
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| Yucca Mountain | |
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Yucca Mountain
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| Highest point | |
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| Geography | |
 Yucca Mountain
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| Topo map | USGS Topopah Spring |
| Geology | |
| Mountain type | Caldera, cinder cones |
| Last eruption | 80,000 years ago |
Yucca Mountain is a mountain in Nevada, near its border with California, approximately 100 miles (160 km) northwest of Las Vegas. Located in the Great Basin, Yucca Mountain is east of the Amargosa Desert, south of the Nevada Test and Training Range and in the Nevada National Security Site. It is the site of the Yucca Mountain nuclear waste repository, which is currently identified by Congressional law as the nation's spent nuclear waste storage facility. However, while licensure of the site through the Nuclear Regulatory Commission is ongoing, political maneuvering led to the site being de-funded in 2010.
Geology
The formation that makes up Yucca Mountain was created by several large eruptions from a caldera volcano and is composed of alternating layers of ignimbrite (welded tuff), non-welded tuff, and semi-welded tuff. The volcanic units have been tilted along fault lines, thus forming the current ridge line called Yucca Mountain. In addition to these faults, Yucca Mountain is criss-crossed by fractures, many of which formed when the volcanic units cooled.
Volcanic history
A series of large explosive volcanic eruptions occurred to the north of Yucca Mountain millions of years ago, producing dense clouds of volcanic ash and rock fragments which melted or compressed together to create layers of rock called tuff, forming the mountains and hills of the region. The volcanic eruptions that produced Yucca Mountain ended about 12 million years ago. This explosive volcanism produced almost all (more than 99 percent) of the volcanic material in the Yucca Mountain region.[3]
Several million years ago, a different type of eruption began in the area. These eruptions were smaller and much less explosive. These small eruptions were marked by lava and cinders seeping and sputtering from cones or fissures. The last such small eruption occurred about 80,000 years ago. The remaining volcanic material (less than one percent) in the Yucca Mountain region is a result of these smaller eruptions.[4][5] Yucca Mountain borders a region known as Crater Flat containing several small cones.
Cultural history
Yucca Mountain and surrounding lands were central in the lives of the Western Shoshone and Southern Paiute peoples, who shared them for religious ceremonies, resource uses, and social events; Yucca Mountain continues to be considered sacred by the Shoshone people living today.[6][7]
References
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Wikimedia Commons has media related to Yucca Mountain. |
- GNIS - Feature Detail Report for Yucca Mountain
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es:Yucca Mountain fr:Yucca Mountain pt:Montanha Yucca
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- Pages with reference errors
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- Amargosa Desert
- Extinct volcanoes
- History of Nye County, Nevada
- Landforms of Nye County, Nevada
- Miocene volcanoes
- Mojave Desert
- Mountains of Nevada
- Mountains of the Great Basin
- Pleistocene volcanoes
- Pliocene volcanoes
- Religious places of the indigenous peoples of North America
- Volcanoes of Nevada
- Cinder cones of the United States
